Improvement in steam-cylinder lubricators



J. BARRY. Steam-Cylinder Lubricator.

No. 211,881. Patented Feb. 4,1879.

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\lllllll umnlull'ulmmil I ae-r v QAMWmW flzzvmeyz N. ETERS.FHOTO-UTHOGFIAPNER, WASHINGTON. [1C1 UNITED STATES JAMES BARRY, OFAUBURN, NEW YORK, ASSIGNOR TO HIMSELF AND JOSEPH BARRY, OF SAME PLACE.

IMPROVEMENT IN STEAM-CYLINDER LUBRICATORS.

Specification forming part of Letters Patent No. 211,881, dated February4, 1879 application filed September 10, 1878.

To all whom it may concern:

Be it known that I, JAMES BARRY, of Auburn, in the county of Cayuga andState of New York, have invented certain new and useful Improvements inSteam-Cylinder Lubricators; and I do hereby declare that the followingis a full, clear, and exact description of the invention, which willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

The nature of my invention consists in the construction and arrangementof a steam-cylinder lubricator, as will be hereinafter more fully setforth.

In the annexed drawings, to which reference is made, Figure l is acentral vertical section of a lubricator embodying my invention. Fig. 2is a transverse section on line as a", Fig. 1. Fig. 3 is a similarsection on line g y, Fig. 1; and Figs. 4, 5, and 6 represent detailviews of my invention.

A represents the oil-cup, provided with the cover 13, screwed thereon soas to be perfectly tight. In the bottom of the cup A is screwed thehollow stem 0, to form the connection with the part to be lubricated.This hollow stem forms, as it were, a lower reservoir, and in the sameis formed a valve-seat, a, with a valve, D, closing upward against thesame by the action of the live steam. Inthe bottom of the cup A isformed the valve-seat a, with the valve D closing downward against thesame.

It will be noticed that the lower valve, D, is made about half an inchshorter than the stem (1 below the valve-seat (0, thus forming areservoir, 1), for steam.

F represents a pipe in the cup A, to conduct air to the lower reservoirlor cylinder, which prevents the condensed and hot air from rising.

I have found by experiment that when the lower valve is opened thecondensed water and hot air in the steam-chest will not only prevent theoil from discharging into the cylinder, but will alsocompletely fill thelower chamber or reservoir with condensed water. By the employment ofthe tube F comparatively cold air is conveyed from the upper reservoirto the lower reservoir, and keeps the condensed water and hot air down,and thus lets the oil discharge freely into the cylinder.

The lower valve, D, is made somewhat shorter-say half an inch, more orless-than the stem 0 of the cup, and thus forms a reservoir at b forsteam. This valve is cupped out at the bottom, as shown at d, and thevalve and valve-stem are made hollow to conduct the steam to theuppervalve, D. The object of this is to melt the tallow, which must bedone before it will discharge into the cylinder.

The two valves D D are made separate, and connected by screw-threads orother suitable means to make a steanrtight joint.

The upper valve, D, is formed with a chamber or opening, 6, in it, whichis made larger than that in the stem connecting the two valves. WVhenthe openings in both upper valve and stem are of the same size the steamwill not rise; but when the upper valve is provided with a chamberlarger than the opening in the stem the steam will rise and melt the oilor tallow.

I am aware that it is not new in lubricators of this class to have twovalves, with the steam passing through the lower valve into the upper toheat the latter, and thereby melt the tallowin the cup, and I do notclaim such, broadly, as my invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is- 1 1. In a steam-cylinderlubricator having an oil-cup with stem and two valves, an air-pipe, F,for conducting air from the upper to the lower reservoir, substantiallyas herein set forth.

2. The upper valve, D, provided with an enlarged chamber, 6, incombination with the lower cupshaped valve, D, having the hollow stem,connecting with the upper valve, and the stem 0, forming asteam-reservoir, b, around and below the lower valve, D, substantiallyas and for the purposes herein set forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

JAMES BARRY.

Witnesses:

E. H. 001213, SAML. F. REYNOLDS.

